What is the difference between the two books, the Standard of Perfection and the Bantam Standard? Is the Bantam Standard simply the Standard of Perfection book, but with only the bantams in it? I show strictly bantams, but I didn't know if their were any difference between the two and how major those differences were. Does one have better info on bantams than the other? I'm wanting to buy one, which probably will be the Bantam Standard as it is cheaper, but I might buy both if their are major advantages to both. Thanks!